[Elecraft] DIY DSP Rev D

[Don Wilhelm]

David,

Yes, Wayne, Lyle and Eric have stated that the results were quite 
similar to the W9AC mods, but were done in a different manner (I presume 
it was easier to accomplish resistor changes in board manufacturing).  
There may have been some other insignificant 'tweaks' to the hardware 
done at the same time (just because it was convenient).  But there are 
no functional or performance enhancements associated with those changes.
I would think if Elecraft had made improvements, they want to advertise 
that fact, a better K3 should sell better. 

Some of these questions are beginning to sound as though there is some 
"conspiracy" going on.  The fact that a board level B can be upgraded to 
assembly level D (with the component changes and the LPF) says that the 
board printed traces has not changed. Note that the board level relates 
only to the printed traces, solder pads, etc.  The assembly level can be 
quite different.
 From the information that we have, the original board was assembly B 
(same as the board level), then the low frequency response was extended 
resulting in level C - finally, Eric decided to add the LPF since it was 
available, resulting in assembly level D.

73,
Don W3FPR

David Cutter wrote:
> Dave
>
> I would gladly fit this daughter board and perhaps do the LF enhancement, 
> but several on this list seem to be saying that the exchange DSP board does 
> something more than these mods provide.
>
> Can anyone clarify?
>
> David
> G3UNA
>   
>